Methods of Making Cold Stamped Spanners

The main categories of manufacturing process are machining, casting and molding, shearing and forming and joining. These different processes help us make lots of things we need in our daily life. Many of them are of plastic while the majority of the tools are made from metal.

Cold and hot stamping -
We can make many tools by either cold stamping or hot stamping metal. Cold stamping is quicker than hot stamping for one reason. We need to heat the metal to the needed temperature in hot stamping. Now, you know why making Cold Stamped Spanners is easy. Cold stamping has more advantages. If your tool needs processes like flanging or draws, it is easy with cold stamping.

The combination spanners made through this process have precision broached rings and jaws that give it an accurate fit. Most of them have a recessed panel that increases its balance and grip. On the contrary, molding is an easy process where we heat a material (usually plastic) and pour it into a mold. This is cooled and we have the desired object. We use this method to make plastic sheeting, butter tubs, and toys.

Use of shears and saws -
To make metal parts we need shears, rotating wheels, and saws. Some machines use heat to shape parts. Use of laser beams helps one achieve high degree of precision and it has high ease of use. Plasma torches and high-energy light beams also find a use in fashioning high precision machine parts. Erosion machines use water or electricity to give shape to parts.

When we talk of CRV SPANNERS RECESSED PANEL we mean these spanners have a recessed panel and are made of Chrome Vanadium Steel. They are cold stamped, hardened, and tempered to give them a high degree of hardness and strength. This is why these tools will last for a long time possibly through your lifetime and beyond. Again, this process is cold stamping.

Joining process for making tools -
We have limitations when we use machining or cutting in that we come to a point where we have many parts and we need to put them together. Here we use joining. Processes like soldering or welding is needed to put individual parts together and keep them stable. For most cases, spanners are made using the drop forging process. We cut steel rods into short lengths. This is called a billet. Billets are passed through an induction heating coil to 1000℃. Electromagnetism is used to heat the metal. 

Three dies are used on the billet now. These dies are known as molds. The upper mold drops on the billet forcing it into shape. Now, the rough shape of the spanner is got. The second die gives the finished shape and the third die trims off the excess metal from the billet.

The trim line is the place the two pieces of the mold come together is ground off so the spanner has a smooth appearance.

For those spanners with an angled head, a machine bends the spanner into shape. We cut a ring flare nut head using a vertical milling machine.



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